Excess blowby

[Hammerhead]

(06-17-2016 )Unilevers Wrote:  

(06-17-2016 )ynot Wrote:  are you talking 1000+ on the outside of the manifold?? cause I've got a prob inside the manifold and I'm topping out at 1150 with no issues what so ever, I keep reading about 1250 being melt down for aluminum pistons and the isx's use monotherm pistons, so you should have been fine I would think. man she must have gotten some hot in there for that too happen.

lol i ran one at 1650 pre turbo temp on a dyno - it was terrifying but it held....

Ok so since I have my shiny new pyro and I'm going to install it when I get home...I have a few other repairs to do at the same time, which position is best to place the probe, pre-turbo or post-turbo and why?
I'm going to have the coolant drained anyhow, and I'm planning on doing a turbo inspection (likely replacement) anyhow, turbo removal to drill & tap the manifold isn't a big issue so that removes the ease of drilling and tapping downstream of the turbo as the obvious reason. What I'm looking for, is there a reason pro or con upstream or downstream that I don't know to ask?